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[Adv. Mater.] Bioinspired Self-Healing Human–Machine Interactive Touch Pad with Pressure-Sensitive Adhesiveness on Targeted Substrates
作者:Guorong Gao, F. Yang, F. Zhou, J. He, W. Lu, P. Xiao, H Yan, Caofeng Pan,* Tao Chen*, Zhonglin Wang*
关键字:hydrogels, ionic conductor, touch pad, self-healing, adhesiveness
论文来源:期刊
具体来源:Adv. Mater., 2020, Inpress
发表时间:2020年

There is an increasing interest to develop next generation of touch pads that requires stretchability and biocompatibility to allow its integration with a human body, and even to mimic the self-healing behavior with fast functionality recovery upon damages. However, most touch pads have been developed based on stiff and brittle electrodes with the lack of important nature of self-healing. We developed polyzwitterion-clay nanocomposite hydrogels as the soft, stretchable and transparent ionic conductor with transmittance of 98.8% and fracture strain beyond 1500%, which could be used as a self-healing human-machine interactive touch pad with pressure sensitive adhesiveness on target substrates. A surface-capacitive touch system was adopted to sense a touched position. Finger positions were perceived during both point-by-point touch and continuous moving. Hydrogel touch pads were adhered to curved or flat insulators, with the high-resolution and self-healable input functions demonstrated by drawing, writing and play electrical games.